A device for measuring the swing amplitude of a motor train straight running

Abstract

This invention provides a device for measuring the sway amplitude of a car or train traveling in a straight line. It includes a mounting plate, a liquid storage cylinder connected to the bottom of the mounting plate via a height adjustment assembly, a nozzle at the bottom of the liquid storage cylinder, and a telescopic assembly at the bottom of the mounting plate. A piston plate is located at the telescopic end of the telescopic assembly, which drives the piston plate to slide along the axis of the liquid storage cylinder within the cylinder. This device, by driving the piston plate to slide within the liquid storage cylinder via the telescopic assembly, forces liquid out of the cylinder through the nozzle. This reduces the impact of height and crosswinds on the liquid. Furthermore, using semi-viscous liquids of different colors allows for longer retention of watermarks on the ground with higher clarity. Multiple tests can be conducted by changing the semi-viscous liquid to different colors, and the trajectories obtained from multiple tests can be directly compared, improving experimental efficiency.

Description

Technical Field

[0001] This utility model relates to the field of automotive inspection technology, specifically to a device for measuring the sway amplitude of a car train during straight-line travel. Background Technology

[0002] The stability of a vehicle during driving is crucial to road traffic safety, and accurately measuring its straight-line sway amplitude is a core task in vehicle performance testing. Currently, the industry commonly uses the water spray method to measure the straight-line sway amplitude of vehicles. This method involves installing a water spray device on the vehicle chassis to continuously spray water onto the ground while the vehicle is in motion. After the vehicle leaves, the measuring personnel calculate the sway amplitude during the vehicle's journey based on the offset trajectory of the water marks on the ground.

[0003] However, after water droplets are ejected from the nozzle, their own weight affects their landing speed and position, causing variations depending on the droplet height. Secondly, crosswinds in the external environment easily interfere with the droplet's trajectory, causing splashing and deviation, resulting in severe distortion of the watermark trajectory. These factors lead to significant errors in the swing amplitude measurement results obtained based on watermark trajectory analysis, making it difficult to meet the requirements of high-precision performance testing for automobiles and trains, and seriously affecting the accuracy and reliability of vehicle development and quality control. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model proposes a vehicle train straight-line sway amplitude measuring device to solve the technical problem mentioned in the background art, which is that when measuring the straight-line sway amplitude of vehicles using the ordinary water spray method, the water droplet height and crosswinds can easily affect the measurement, leading to water droplet splashing, trajectory distortion, and other issues, resulting in inaccurate measurement results.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a device for measuring the sway amplitude of a car or train during straight-line travel, comprising:

[0006] Mounting plate;

[0007] A liquid storage cylinder is mounted at the bottom of the mounting plate via a height adjustment assembly, and a nozzle is provided at the bottom of the liquid storage cylinder; and

[0008] A telescopic assembly is fixedly installed at the bottom of the mounting plate, and a piston plate is provided at its telescopic end. The piston plate is driven by the telescopic assembly to slide within the liquid storage cylinder along the axis of the liquid storage cylinder.

[0009] In a preferred embodiment, an elastic element is provided between the piston plate and the top inner side of the liquid storage cylinder.

[0010] In a preferred embodiment, a first sealing ring is fitted around the piston plate, and the first sealing ring is sealed to the inner wall of the liquid storage cylinder.

[0011] In a preferred embodiment, the height adjustment component includes:

[0012] The first connecting rod is fixedly installed at the bottom of the mounting plate;

[0013] The second connecting rod is slidably and vertically connected to the first connecting rod, and is fixedly connected to the liquid storage cylinder. Both the first and second connecting rods have multiple sets of through holes spaced apart.

[0014] A fixing bolt is inserted into the through hole of the first connecting rod and screwed into the through hole of the second connecting rod.

[0015] In a preferred embodiment, the telescopic component includes:

[0016] A hydraulic rod is disposed at the bottom of the mounting plate, and a piston plate is disposed at the telescopic end of the hydraulic rod;

[0017] The oil pump motor is equipped with a fixing plate, and its oil delivery end is connected to the hydraulic rod through an oil delivery pipe.

[0018] In a preferred embodiment, a second sealing ring is fixedly provided at the top of the liquid storage cylinder, and the telescopic end of the hydraulic rod passes through the second sealing ring.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] During use, the device is fixed to the corresponding position on the bottom of the vehicle chassis via a mounting plate. The height of the liquid reservoir is then adjusted using a height adjustment component to maintain a suitable distance between the nozzle and the ground. A colored, semi-viscous liquid is then poured into the reservoir. During testing, a piston plate is driven by a telescopic component to slide within the reservoir, forcing the liquid out of the nozzle. This reduces the impact of height and crosswinds on the liquid. Using different colored semi-viscous liquids allows watermarks to remain on the ground for a longer time with higher clarity, effectively splashing water droplets and avoiding trajectory distortion. Multiple tests can be conducted by changing the color of the semi-viscous liquid, and the trajectories obtained from multiple tests can be directly compared, improving experimental efficiency. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of this utility model, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0022] Figure 1 A three-dimensional structural schematic diagram of a vehicle / train straight-line sway amplitude measuring device provided by this utility model;

[0023] Figure 2 This is a schematic diagram of the internal structure of the liquid storage cylinder in the automobile train straight-line sway amplitude measuring device of this utility model;

[0024] Figure label:

[0025] 1. Mounting plate; 2. Hydraulic rod; 3. Piston plate; 4. First sealing ring; 5. Fixing plate; 6. Oil pump motor; 7. Oil delivery pipeline; 8. First connecting rod; 9. Fixing bolt; 10. Second connecting rod; 11. Liquid storage tank; 12. Nozzle; 13. Second sealing ring; 14. Elastic element. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present invention and should not be construed as limiting the scope of protection of the present invention. Those skilled in the art can make some non-essential improvements and adjustments to the present invention based on the above application content.

[0027] Example:

[0028] like Figure 1 As shown, this utility model provides a device for measuring the sway amplitude of a car train during straight-line travel. It includes a mounting plate 1, with a liquid reservoir 11 mounted on the bottom of the mounting plate 1 via a height adjustment assembly. A nozzle 12 is located at the bottom of the liquid reservoir 11. The height adjustment assembly includes a first connecting rod 8 fixedly mounted on the bottom of the mounting plate 1, and a second connecting rod 10 slidably mounted on the first connecting rod 8. The second connecting rod 10 is fixedly connected to the liquid reservoir 11. Multiple sets of through holes are spaced apart on both the first and second connecting rods 8. A fixing bolt 9 passes through the through hole of the first connecting rod 8 and is screwed into the through hole of the second connecting rod 10.

[0029] When using the device, the mounting plate 1 is fixed to the bottom of the vehicle chassis, and the height of the nozzle 12 is adjusted by sliding the second connecting rod 10 on the first connecting rod 8 so that the nozzle 12 can be positioned appropriately to reduce the large liquid splash caused by the liquid outlet position being too high. Then, the positions of the first connecting rod 8 and the second connecting rod 10 are fixed by the fixing bolts 9, and a colored semi-viscous liquid is poured into the liquid storage cylinder 11 to complete the installation of the device.

[0030] like Figure 2As shown, in this embodiment, a telescopic assembly is fixedly installed at the bottom of the mounting plate 1. A piston plate 3 is installed at the telescopic end of the telescopic assembly. The piston plate 3 is driven by the telescopic assembly to slide within the liquid storage cylinder 11 along its axis. An elastic element 14 is provided between the piston plate 3 and the top inner side of the liquid storage cylinder 11. The telescopic assembly includes a hydraulic rod 2 installed at the bottom of the mounting plate 1. The piston plate 3 is installed at the telescopic end of the hydraulic rod 2. The oil pump motor 6 is connected to the hydraulic rod 2 via an oil supply pipe 7. A fixing plate 5 is installed on the oil pump motor 6, allowing the oil pump motor 6 to be installed.

[0031] Initially, the oil pump motor 6 does not supply oil, and the elastic element 14 is compressed. Under the action of the elastic element 14, the piston plate 3 is pushed to slide, thus spraying out the liquid. The spraying speed can also be affected by controlling the spring extension speed of the oil pump motor 6. A first sealing ring 4 is fitted around the piston plate 3, and the first sealing ring 4 is sealed to the inner wall of the liquid storage cylinder 11. A second sealing ring 13 is fixedly installed at the top of the liquid storage cylinder 11. The telescopic end of the hydraulic rod 2 passes through the second sealing ring 13 to improve the airtightness of the liquid storage cylinder 11 and improve the spraying efficiency. Furthermore, because the liquid has a certain viscosity, the watermarks formed by the liquid spraying out are less affected by crosswinds and have higher clarity.

[0032] The specific usage and beneficial effects of this utility model are as follows:

[0033] During use, the device is fixed to the corresponding position on the bottom of the vehicle chassis via the mounting plate 1. The height of the liquid reservoir 11 is then adjusted using the height adjustment component to maintain a suitable distance between the nozzle 12 and the ground. A colored semi-viscous liquid is then poured into the liquid reservoir 11. During testing, the piston plate 3 is driven by the telescopic component to slide inside the liquid reservoir 11, forcing the liquid out of the nozzle 12. This reduces the impact of height and crosswinds on the liquid. Furthermore, using different colored semi-viscous liquids allows the watermarks to remain on the ground for a longer time with higher clarity, effectively splashing water droplets and avoiding trajectory distortion. Multiple tests can be conducted by changing the semi-viscous liquid to different colors, and the trajectories obtained from multiple tests can be compared visually, improving experimental efficiency.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above. Modifications or improvements can be made to this utility model, which is obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of this utility model fall within the scope of protection claimed by this utility model.

Claims

1. A device for measuring the sway amplitude of a vehicle or train during straight-line travel, characterized in that, Including: Mounting plate (1); A liquid storage cylinder (11) is disposed at the bottom of the mounting plate (1) via a height adjustment assembly, and a nozzle (12) is disposed at the bottom of the liquid storage cylinder (11); and The telescopic assembly is fixedly installed at the bottom of the mounting plate (1), and its telescopic end is provided with a piston plate (3). The piston plate (3) is driven by the telescopic assembly to slide within the liquid storage cylinder (11) along the axis of the liquid storage cylinder (11).

2. The device for measuring the sway amplitude of a car train during straight-line travel according to claim 1, characterized in that: An elastic element (14) is provided between the piston plate (3) and the top of the inner side of the liquid storage cylinder (11).

3. The device for measuring the sway amplitude of a car train during straight-line travel according to claim 1, characterized in that: The piston plate (3) is fitted with a first sealing ring (4) around its periphery, and the first sealing ring (4) is sealed to the inner wall of the liquid storage cylinder (11).

4. The device for measuring the sway amplitude of a car train during straight-line travel according to claim 1, characterized in that, The height adjustment component includes: The first connecting rod (8) is fixedly installed at the bottom of the mounting plate (1); The second connecting rod (10) is slidably connected to the first connecting rod (8), and the second connecting rod (10) is fixedly connected to the liquid storage cylinder (11). Multiple sets of through holes are spaced apart on both the first connecting rod (8) and the second connecting rod (10). The fixing bolt (9) is inserted into the through hole of the first connecting rod (8) and screwed into the through hole of the second connecting rod (10).

5. The device for measuring the sway amplitude of a car or train during straight-line travel according to claim 1, characterized in that, The telescopic components include: A hydraulic rod (2) is disposed at the bottom of the mounting plate (1), and a piston plate (3) is disposed at the telescopic end of the hydraulic rod (2); The oil pump motor (6) is equipped with a fixing plate (5), and its oil delivery end is connected to the hydraulic rod (2) through an oil delivery pipe (7).

6. The device for measuring the sway amplitude of a car train during straight-line travel according to claim 5, characterized in that: The top of the liquid storage cylinder (11) is fixedly provided with a second sealing ring (13), and the telescopic end of the hydraulic rod (2) passes through the second sealing ring (13).

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